On the structural phase transformations in GexSb40−xSe60 glasses

Spatial distribution of rare-earth ions in Se-based chalcogenide glasses with or without Ga

“…Fig. 2 shows the free volume factors of Ge-Sb-Se glasses doped with Pr [14,15]. For Ge x Sb 0.1 Se z and Ge 0.25 Sb y Se z samples, changes of the free volumes appeared to behave similarly to the corresponding measured lifetimes.…”

Structural study of GexSb40−xS60 (x=10, 20 and 30) glasses

“…The Ge-S-Ag glasses are super ionic conductors and have attracted a great deal of attention from application to optical device [4]. The Ge-Sb-S and Ge-Sb-Se ternary glasses have characteristic behavior in the IR-transmission that makes them useful for optical application [5][6][7][8][9].…”

“…As is analogized from the structure of binary Ge-S and Sb-S systems, it seems that the ternary Ge x Sb 40Àx S 60 glasses have two kinds of structural unit. In the Ge xSb 40Àx Se 60 glasses, the structural phase transition has been discussed by using the average coordination number [9]. On the basis of the X-ray diffraction data, the existence of the topological phase transition was suggested for the Ge x Sb 40Àx S 60 glasses [8].…”

Compositional Dependence Of Hardness Of Ge-Sb-Se Glass For Molded Lens Applications

“…Another interesting opinion associated with such MCN-dependent behaviors is that the dimensionality of amorphous structure evolves to three-dimensional network from two-dimensional layer at MCN of ∼2.67 [14]. As for the Ge x Sb 40−x Se 60 glasses, it was reported that their Vickers hardness is maximized at around 2.67 [15]. The compositional range used in this study roughly covers MCN values ranging from 2.425 to 2.775 with a lot more specimens, so that it is a good chance to check whether such a behavior is also evident in this much broadened compositional range.…”

“…Vickers hardness of ternary Ge-Sb-Se glass reported in previous studies. Note that the Vickers hardness data appearing in these seven references are merged in this plot, all of which have not intended explicitly to compositional study for the infrared lens applications out of this ternary glass system for the molded lens applications [2][3][4][5][6][7]. Specifically, even though hardness data are available across the glass-forming region, as depicted in Fig.…”